A texture image grading method for pituitary tumors based on fine-grained medical image segmentation and truth discovery data augmentation
A medical image and grading method technology, applied in the field of medical image processing, can solve the problem of too few medical image data sets, and achieve the effect of assisting clinical diagnosis
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[0062] The present invention will be further described below with reference to the accompanying drawings.
[0063] The principle of the density peak algorithm based on the present invention is as follows:
[0064] In the DPC algorithm, the choice of cluster centers is its core idea. The selected cluster center is characterized by local density and distance as much as possible, and there is a relatively large number of points with higher density. distance. Consider the cluster data set s = { i } N i = 1, (n∈ N +), according to the above two features, the algorithm has every data point in the dataset S i Define local density ρ i And relative distance δ i . The distance between the two variables and data points D ij Related.
[0065] Data point χ i The local density is defined as:
[0066]
[0067] Where is the function
[0068]
[0069] The parameter DC> 0 in the formula is a truncation distance, which is specified in advance; D ij = Dist ( i χ j ), Indicating the data point χ i...
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